Question 1118466
trolley: x
bus: x+6
75/x = 90/(x + 6)
75*(x + 6) = 90*x
75x + 450 = 90x
75x - 90x = -450
-15x = -450
x = 30
The trolley travels at 30 m.p.h. and the bus at 30 + 6 = 36 mph